Thanks for your feedback.
I've tested the plugin on your website and experienced the same white area instead of the map.
After reading the source code generated on your blog I can guess why it is happening but I can't reproduce it on my test environment.

Can you please post some information about your WordPress installation:
- WordPress version
- single mode / multisite mode installation ?
- activated plugins with their versions
- theme name + version

I installed the same WordPress environment as the one described in your previous post and I was able to reproduce this issue.
After some investigation I found that the offending component is the "Like" plugin. It makes the content of your blog posts to be processed twice (altough they are only displayed once), which breaks div id numbering required by the Just Map It! plugin.

I highly recommand you to migrate to another plugin offering similar fonctionnalities as this one is unmaintained for more than 2 years now.

We will also add this plugin to the list on incompatible plugins with Just Map It!

Could you please confirm that the map is working after you deactivate the "Like" plugin on your blog ?